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Finding the Fourth Proportional to 45,409.68, 68,025.96 and 25,628.40

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Solution

The fourth proportional to 45,409.68, 68,025.96 and 25,628.40 is: 38,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,409.68 : 68,025.96 = 25,628.40 : x
  2. Step 2: Convert to fraction form
    45,409.68/68,025.96 = 25,628.40/x
  3. Step 3: Cross multiply
    45,409.68x = 68,025.96 × 25,628.40
  4. Step 4: Simplify right side
    45,409.68x = 1,743,396,513.26
  5. Step 5: Solve for x
    x = 1,743,396,513.26/45,409.68
  6. Step 6: Final answer
    x = 38,392.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.